I hope you know what your dealing with. I have many people overseas whether it is from Malaysia, Thailand, or Vietnam. They were once part with bettas and still with bettas. It does cost a lot of money to even try and run the business. Even big sellers such as MickKamfa, Chonburiman, Redsky, Crossbreedchanna etc still have such a hard time selling them.
If you don't have money to spend anymore on a single fish like that, this is going to be very hard. Some sellers owns their own farm like Chonburiman, Crossbreedchanna and others. Well guess what, a lot of their fish just sit and expires. If they come out good then they jack up the price more as well only. These guys here are very wealthy in order to run just business if you want to make it as a business. Lots of fish becomes DOA, they always refund or send another fish same quality. And this means fish up to thousands of dollars as well. I hope you know what you are doing, and all powers to you on here.